let birthday ={
    year:1993,
    month:3,
    day:15
}
function getliveDay(birthday){
    let olddate = new Date(birthday.year,birthday.month-1,birthday.day).getTime()
    let nowdate = new Date().getTime()
    let liveDay = (nowdate-olddate)/1000/60/60/24
    console.log(liveDay)
}
getliveDay(birthday)